Gas-engine.



No. 889,887. PATENTED JUNE 9, 1908. F. M. ASHLEY.

GAS ENGINE.

APPLICATION FILED JUNE 19,1905.

2 SHEETS-SHEET 1.

WITNESSES: INVENTOR:

No. 889,887. PATENTED JUNE 9, 1908. F. M. ASHLEY.

GAS ENGINE.

APPLICATION FILED JUNE 19,1905.

2 SHEETS-SHEET 2,

WITNESSES: INVENTOR: gmvwi. *w

UNITED STATES? Parana caries.

FRANK M. ASHLEY, OF NEW YORK, N. Y., AS SIGNOR OF ONE-HALF TO WILLIAM A. ARM- STRONG, OF PHILADELPHIA, PENNSYLVANIA.

GAS-ENGINE.

Specification of Letters Patent.

Application filed June 19, 1905. Serial No. 265,8'i5.

A Patented June o, 1908.

To all whom it may concern:

Be it known that I, FRANK M. ASHLEY, a citizen of the United States, and resident 'of New York city, in the county of New York and State of New York, have invented certain new and useful Im rovements in Gas- Engines, of which the fol owing is a specification.

The present invention pertains to gas en-- gines and particularly to that type known ,as the two cycle engine.

The objects of the invention are to provide an engine of this type that may be operated at a higher s eed than those heretofore made and that wi not explode the charge of combustible gas before the proper time in its cycle, and in which the air and gas are separately compressed and are not brought into mixture until after they enter the cylinder of the engine. y

A further object is to provide an engine which will be more economical in its combustion of fuel, than the usual type of two cycle engines heretofore made.

A further object is to rovide a construction with two pistons, wherein both pistons co-act to control both the inlet of air and gas,

and the-exhaust ports.

A further object is to decrease the time required to charge and discharge the combustion chamber of the engine sothat the engine may be operated at a-higherspeed than heretofore in this type of engine, also to inerease the effectiveness of the scavenging charge of air by using a plurality of inlet air ports located apart from each other, and also by the arrangement of the ports to e'fiect a proper mechanical mixture, of the fuel gases as they enter the combustion chamber.

Referring to the drawings which form part of this s ecification and in which similar letters 0 reference indicate corresponding parts, Figure 1, is a front View of my engine, showing the cranks and crank casing in section. Fig. 2, isa central vertical sectional view of the engine, in a plane at right angles to Fig. 1, and showing the relative position of the pistons when the gas is compressed in outlet ports for the air supply. Fig. 4, is a cross sectional view taken on the lines indicated by X, and Y, in Fig. 2, and showing the valves for controlling the gas and air supply to the cylinder of the engine. v A, indicates the cylinder of the engine; B and B the pistons therein; 0, the piston rod attached to the piston B; D, the cross rod; E and E, theconnecting rods which drive the cranks F and F; G, is the connecting rod which drives the center crank G; H and H are the shafts on which the cranks are mounted and H and H are the bearings therefor. I and I are the driving wheels; G and G are the disks which are secured to the crank G, and are hollowed out on one side as indicated at G and G for purpose of balancing. J, indicates the crank casing and J the base plate. The casing J, is secured to the cylinder A, by bolts J as shown. 1 On the top of the cylinder A, is a cylinder head A, provided with the stuffing box A for packing the rod C. Secured to the top of the cylinder head A, is a frame A having a bearing A, for the support of the rod 0. The rod C, is secured to the cross rod D, at D, and the connecting rods E, and E, are pivotally connected to the rod D, at D and D C", indicates the air compressing chamber, C the gas compressing chamber and C the combustion chamber. I

K, indicates the air inlet check valve, and L the air outlet valve, which communicates with an enlarged chamber M, cast in the cylinder casing, and N, is the air conduit leading therefrom to the ports N, and N controlled by the manually operated valves N, and N, respectively, on the spindles of the valve handles N and N The gas is controlled in the same manner, the gas entering the chamber through the pipe 0, and port 0; and being then forced by the piston B through the conduit-P, (see dotted lines in Fig. 1) to the ports F, and P indicated by dotted lines in Fig. 2, and one of which 1s" R and R, are plates on the ends of the pistons-for deflecting the incoming gases, the use and construction of which plates are well knownin the art.

S, and S, are the exhaust ports from the cylinder through which the exhaust gases pass to the common outlet S T, and T, indicate the water jacket spaces. Since the general parts of a gas engine are so Well known in the art, I think further detailed description unnecessary.

The 0 eration is as follows: To start-the engine, t e gas is first admitted to the cham ber C through the port 0, and since the air chamber C is normally full of air under' atmospheric pressure, the turning of the wheel I, would force the cranks F, F, and G, to turn in unison whereby the piston B would over-run the port 0, and thereafter trap and compress the gas in the chamber 0 and force it to the ports P and P through which it enters the cylinder chamber C when the pistons travel beyond said ports. The piston B, in its upward movement forces the air from the chamber C through the valve L, into the chamber M, (which chamber M, thus serves su lementary to the chamber C) and conduit to the ports N, and N so that when the pistons B, and B, ass first the air orts ,on receding from each other in their rst' stroke, the air under pressure in the chamber M, and conduit N, flows through the ports N, and N into the cylindercham- 'ber 0 hereinafter termed the combustion chamber, and striking the plates R, and It, the air is deflected in such a manner as to force the air that was previously in the combustion chamber, out through the exhaust ports S, and S, and as the pistons B, and B, travel past said last named ports, the as inlet orts P, and P are opened,'and the gas un er pressure 'fiows into the combustion chamber C and immediately thereafter the pistons B, and B, reverse the direction of their movement and the ports P, and P are I first closed thus cutting off the gas supply and immediately thereafter the air ports N, and N and the exhaust ports S, and S, are closed, the charge of air and gas being trapped in the combustion chamber (1, and compressed and ignited when the pistons are in the position indicated in the drawings. The burning of the fuel gases, forces the pistons apart until they over run the exhaust ports S, and S, and the air ports N, and N when the burned gases exhaust through the ex haust orts S, and S, at'practically the same time t at the air ports N, and N, are opened, whereby the incoming air acts to forceout the burned gases, and immediately thereafter the further movement of the pistons opens the gas ports P, and P and the as again flows into the combustion chamber, and is again trapped withthe air and compressed and burned as before described. The

port through which the relative volumes of air and gas entering the combustion chamber C are controlled by the valves N N and P and P respectively, which may be adjusted as desired while the engine is running so that the best results may be obtained.

It will be-noted that the engine may be operated'by using but one of the exhaust ports, and also by using but one gas inlet port and two air inlet ports, which result may e accomplished by sim ly closing one of the manually operated glo e valves leading to one of the gas inlet ports, or it may be operated by using but one air inlet port in cdmbination with the two gas inlet ports, by closing one of said air controlling valves. The valves N and N} and P and P therefore enable me to change the quantity of gas entering .the combustion cylinder while the engine is in operation and also the relative uantitv of each gas and therefore its mec hanical mixture, or if desired, to close ofl' one of said air ports and one of said gas ports which might be desirable under'certain conditions.

In engines of very large powers such as generators of 1000 H. P. and upwards, the

elimination of mechanically operated valves will be ap reciated, and the advantage of provision for governing the s eed and fuel mixtures and the provision or expediting the charging of the cylinders with fuel gas in the shortest ossible s ace of time and for discharging t 1e burner gases therefrom will be a parent to all engineers skilled in this art. T 1e engine could be designed to work in a horizontal position, if desired. Having thus described in will now point outin the fol owing clauses, what I claim as new and desire to secure by Letters Patent,

1. in a gas engine, comprising a cylinder having two air inlet ports, two gas inlet ports and two exhaust ports, two pistonsin said cylinder, each of which controls one of said gas inlet ports, one of said air inlet ports and pnelof said exhaust ports for the purpose set ort 1.

invention, I

2. In a gas engine, a cylinder adapted to I each of which travels over a gas and an air inle tport and controls the inlet of fiuid to said cylinder, said cylinder having an exhaust products of combustion may be liberated.

3. in a gas engine, a cylinder adapted to contain two, pistons and having separate gas and air inlet ports located at points therein about where the pistons will rest at the end of their strokes, and two pistons in said cylinder each of which travels over a gas and an airinlet port and controls the inlet of fluid to and air inlet ports located 'at points therein about where the. pistons will rest at the end of their strokes, and two pistons in said cylin-' der, each of which trave s over agas and an air inlet port and controls the inlet of fluid to said cylinder, said cylinder having two exhaustports,,o'ne of said ports being controlled by one of said pistons and one by the'other 5. In a gas engine, a cylinder adapted to contain two pistons andhaving separate gas and air inlet ports located at points therein about where the pistons will rest at the end of their strokes, and two istons in said'cylin der, each of which trave s over a gas and an air inlet port andcontrols the inlet of fluid thereto, one of said pistons serving to compress air in one end of said cylinder and one serving to compress gas in the other end thereof, said-cylinder having conduits in its wall through which said air and gas may be led to said inlet ports.

6. In agas engine, a cylinder adapted to contain two pistons and having separate air and gas inlet ports located at points therein about where the pistons will rest at the end of their strokes, and two pistons in said cylinder, each of which travels over a gas and an air inlet port and controls the inlet of fluid thereto, said cylinder having an exhaust port located approximately in line with one of said air inlet ports, one ofsaid pistons serving to compress air in one end of said cylinder and one serving to compress gas in the other end thereof, said cylinder having conduits through which said air and gas may be led to said inlet ports. V

7. In a gas engine, a cylinder of uniform internal diameter throughout its length and having two sets of inlet ports each set comprising a gas and an air inlet, and also having two exhaust ports, one of said exhaust: ports being. located opposite one set of inlet ports and one opposite the other set thereof, two pistons in's'aid cylinder, one of which controls one set of inlet ports and one of said exhaust ports, and the other of which controls the other setof inlet ports and exhaust port, said pistonsand cylinder forming a combustion chamber in which portion said ports are located. I

8. In a gas engine, a cylinder having an exhaust port and two sets of inlet ports, each set comprising a gas port and an air port, two pistons in said cylinder, a main shaft, means connecting said pistons with said main shaft, a closed crank case forming with one of said pistons a gas chamber in whichgas-may be compressed by one of said pistons, one end of said cylinder and the other of said pistons forming a chamber in which air may be compressed by said piston, said pistons and cylinder forming a combustion chamber in which said ports are located, said cylinder having provision for conducting air and gas to said combustion chamber. i

9. In a gas engine, a cylinder having two air inlet ports and'a gas inlet .port, and two pistons in said cylinder, each of which is connected by suitable transmitting mechanism to a main shaft of said engine and each of which controls one of said air inlet'ports.

10. In a gas engine, a cylinder having two gasinlet ports and an air inlet port, and two pistons in said cylinder, each of which controls one of said gas inlet ports.

1' 1'; In a'gas engine, a cylinder having two air inlet ports and a gas inlet port and an exhaust port,,and two pistons in said cylinder, each of which controls one of said air inlet ports and one of which controls the exhaust port. y

12. In a gas engine, a cylinder having two gas inlet ports and an air inlet port, and two pistons in said cylinder, each of which controls one of said gas inlet-ports and one of which controls said air inlet port, said cylinder having an exhaust port controlled by one of said pistons.

13. In a gas engine, a cylinder havin two air inlet ports and a gas inlet port an two exhaust ports, two pistons in said cylinder, each of which controls one of said-air inlet ports and one of which controls a gas inlet port and an exhaust port. v

14. In a gas engine, a cylinder having two air inlet ports and twogas inlet ports and two exhaust ports, a main shaft, two pistons in said cylinder, each of which is provided with means for transmitting its'move- ,ment to said main shaft, a gas chamber and an-air chamber formed bysaid pistons and said cylinderfor the compression of gas and air respectively, a conduit leading from said gas chamber tosaid gas ports in said cylinder and a conduit leading from said air chamber to said airports in said cylinder, all of said ports insaid cylinder being controlled by said pistons and located in'a position to be:

opened by said pistons immediately before substantially as set forth.

' 15. In a gas engine, comprlsing a cylinder having two air inlet ports, two gas inlet ports and two exhaust ports, two pistons in said cylinder, each of which controls one of said said pistons complete. their power strokes haust port through which the products of of their strokes, and two pistons in said cyl I combustion may be liberated, and means for restricting thearea of said gas and air inlet ports.

17. In a gas engine, a cylinder adapted to contain two pistons and having separate gasand air inlet ports located at points therein about where the pistons will rest at the end of their strokes, and two pistons in said cylinder, each of which travels over a gas and an air inlet port and control the inlet of fluid to said cylinder, said cylinder having an. ex-

haust port controlled by one of said pistons,v

and means for restricting the area of said gas and air inlet ports.

18. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at points therein about where the pistons will rest at the end of their strokes, and two pistons in said cylinder each of which travels over a gas and an air inlet port and controls the inlet of fluid to said cylinder, said cylinder having' two exhaust ports, one of said ports being controlled by one of said pistons and one by the other,

and means for restricting the area of said gas and air inlet ports.

19. In a gas engine,'a cylinder adapted to contain two pistons and havin separate gas and air inlet ports located at points therein about where the pistons will rest at the end inder,'each of which travels'over a as and an air inlet port and controls the inlet of fluid thereto, one of said pistons serving to compress air in one end of said cylinder and one serving to compressgas in the other end thereof, said cylinder having conduits in'its wall through which said air and gas may be led to said inlet ports,,and means for restricting the area of said gas and air inlet ports.

, 20. In a gas engine, a cylinder adapted to' contain two pistons andhaving separate air and gas inlet orts locatedat points therein about where t e pistons will rest at the end of their strokes, and'two pistons in said cyl inder, each of which travels over a gas and an air inlet port and controls the inlet of fluid thereto, said cylinder having an exhaust port located approximately in line with one of said air inlet ports, one of said pistons serving to compress air in one end of said cylinder and one serving to compress gas' in the other end thereof, said cylinder having conduits through which said air and gas may be led to said inlet ports, and means for restricting the area of said gas and air inlet ports.

21. In a gas engine, a cylinder of uniform internal'diamet'er throughout its length and having two ,sets of-inlet ports each set comprising a gas and'an air inlet, and also having two exhaust (ports, one of said exhaust ports being locate opposite one set of inlet ports and one opposite the other set thereof, two

. chamber in which ortion said ports are located, and means or restricting the area of said gas and air inlet ports.

22. In a gas engine, a cylinder having an exhaust'port' and two sets ofv inlet ports, each set comprising a gas ort and an air ort, two pistons in said cylin er, a main shaft, means connecting said pistons with said main shaft, a closed crank case forming with one of said pistons a gas chamber in which gas may be compressed bysaid piston, one end of said cylinder and the "other of said pistons forming a chamber in which air 'may be compressed by said piston, said pistons and cylinder forming a combustion chamber in which said ports are located, parts forming conduits for conducting air and gas tosaid combustion chamber, and means for restricting the area of said gas and air inlet ports.

23. In a gas engine, a cylinder havingtwo air inlet ports anda gas inlet port, and two pistons in said 0 linder, each ofwhichisconnected by suita letransmitting ,mechanism to a main shaft of said-engine and each of which controls one of said air inlet ports, and means for restricting the area of said gas and air inlet ports 1 24. Ina gas engine, a cylinder having two gas inlet ports and an air inlet port, andtwo pistons in said cylinder, each of which con-- trols one of said gas inlet "ports, and means for restricting the area of said gas and air inlet ports. v

25. In a gas engine, a cylinder having two airv inlet'ports and a gas inlet port and an exhaust port, and two pistons in said cylinder,

' each of which controls one of said air inlet ports and one of which controls ,an exhaust of said pistons, and means for restricting the area of said gas and air inlet orts.

27. Ina gas engine, a cylinfle having two ,air inlet .ports and a gas inlet port and two "exhaust ports, two pistons in said cylinder, each of which controls one of said air inlet port and said exhaust port, and means for re' stricting the area of said gas and air inlet ports. v

28. In a gas engine, a cylinder having two air inlet ports and two gas inlet ports and two exhaust ports, a main shaft, two pistons in said cylinder, each of which is provided ports and 'one of which controls said gas inlet means for transmitting its movement to said main shaft, a gas chamber and an air chamber formed by said pistons and said cylinder for compressing gas and air respectively, a conduit leading from said gas chamber to said gas ports in said cylinder and a conduit leading from said air chamber to said air ports in said cylinder, all of said ports in said cylinder being controlled by said pistons and located in a position to be opened by said pistons immediately before said pistons complete their power strokes substantially as set forth, and means for restricting the area of said gas and air inlet ports.

29. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at points therein about where the pistons will rest at the ends of their strokes, two pistons in said cylinder,

each of which travels over a gas and an air inlet port and controls the inlet of fluid to said cylinder, and conduits separately delivering gas and air under pressure to said gas and air inlet ports. v

30. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at points therein about where the pistons will rest at the ends of their strokes, two pistons in said cylinder, each of which travels over a gas and an air port and controls the inlet of fluid to the cylinder, said cylinder having an exhaust port located a proximately in line with one of. said air in et ports, and conduits separately delivering gas and air under pressure to said gas and air inlet ports.

31. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at points therein about where the pistons will rest at the end of their strokes, two pistons in said cylinder, each of which travels over a gas inlet port and an air inlet port and controls theinlet of fluid to said cylinder, one of said pistons serving to compress air in one end of said cylinder, a supplemental chamber for receiving said, compressed air, and conduits through which the air from the supplemental chamber and gas under pressure may be led to said inlet ports.

p 32. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at points therein about where the pistons will rest at the end of their strokes, two istons in said cylinder, each of which travels over a gas inlet port and an air inlet port and controls the inlet of fluid to said cylinder, one of said pistons serving to compress air in one end of said cylinder, and one piston servlng to compress gas in the other end of said cylinder, a supplemental chamber for receiving the compressed air, and conduits through which said air and gas may be led to said inlet ports.

33. In a gas'engine, a cylinder adapted to contain two pistons and having separate air and gas inlet ports located at points therein about where the pistons will rest at the ends of their strokes, and two pistons in said cylinder, each of which travels over a gas inlet port and an air inlet port and controls the inlet of fluid to the cylinder, said cylinder having an exhaust port located approximately in line with one of said air inlet ports, one of said pistons serving to com ress air in one end of said cylinder, a supp emental chamber for receiving said compressed air, and conduits through which the air from the supplemental chamber and gas under pressure may be led to said inlet'ports.

3 4, In a gas engine, a cylinder adapted to cohtain two pistons and having separate air and gas inlet ports located at points therein about where the pistons will rest at the ends of their strokes, two pistons in said cylinder, each of which travels over a gas inlet port and an air inlet port and controls the inlet of fluid to the cylinder, said cylinder having an exhaust port located approximatelyin line with one of said airinlet ports, one of said pistons serving to compress air in one end of said cylinder, and one piston serving to compress gas in the other end of said cylinder, a

trols one of said gas inlet ports, and means for varying the admission areas of said gas inlet ports. i

.36. In a gas engine, a cylinder having two air'inlet ports, a gas inlet port and an exhaust port, two pistons in said cylinder, each of which controls one of said air inlet ports, and one of which controls the exhaust port, and means for varying the admission area of said gas inlet port. V

37 In agas engine, a cylinder havingtwo gas inlet ports and an air inlet port, two pistons in said cylinder, each of which controls one of'said gas inlet ports, and one of which controls said air inlet port, said cylinder. having an exhaust port controlled by one of said pistons, and means for varying the admission areas of said gas inlet ports.

' 38. In a gas engine, comprising a cylinder 7 about where the pistons will rest at the ends of their strokes, two istons in said cylinder, each of which trave s over a gas inlet port mg the volume 0 each of which trave and an air inlet port and controls the inlet of fiuidto said cylinder, conduits separately delivering gas and air under pressure tosaid gas and air inlet ports, .and means for vary I gas admitted.

- 40. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at points therein about where the piston will rest at the ends of their strokes, two istons in said cylinder,

1 over a gas inlet ort and an air inlet port,- and controls the inlet of fluid to said cylinder, conduits for separately delivering gas and air under pressure to said gas and air inlet ports, and means for varying the volume of air admitted to the- I cylinder.

41. In a gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet ports located at pointstherein about where the pistons will rest at the end of their strokes, two lpistons in said cylinder, each of which trave s over a gas inlet port and an air inlet port and'controls the inlet offluid to said cylinder, one of said pistons serving to com ress airin oneend of said cylinder, a supp emental chamber for receiving said compressed air,-conduits through which the air from the supplemental chamber and gas under pressure-may be led to said inlet ports, and means for varyin .the volume. of gas admitted to the cylin er.

42. Ina gas engine, a cylinder adapted to contain two pistons and having separate gas and air inlet portslocated at points therein about where the pistons will rest at the ends and 'an air inlet port and controls the inlet of fluid to said cylinder, one of said pistons serving to compress-airin one end of saidcylinder, and one piston servin to compress I gas in the other end of sai cylinder, a supplemental chamber for receiving the compressed air, conduits through which air and as may be led to said inlet ports, and means or varying the volume of gas admitted to the cylinder. p

43. In a gas engine, a cylinder, two pistons contributing 'toform a combustion chamber between them, the construction presenting two gas inlet 'orts, one of which is located near-the end 0 thestroke of each of said pistons, and an air inlet port and'an exhaust port.

44. In a gas engine, a cylinder, two pistons contributing to form a combustion chamber between them, the construction presenting two air inlet ports, one of which is'located near the end of the stroke of each of said pistons, and a gas inlet port and an exhaust ort.

Signe .at New York in the county of ew v York and State of New York this 13th day-of June A. 19,05.

. FRANK M. ASHLEY.'

Witnesses:

WILLIAM PAXToN,

MAY PERoIvAL. 

